Comment 2 for bug 95260

i am having a similar problem, the updater tells me to free at least 48.8M of space on /var/cache/apt/archives/ but according to df i have 1.2GB available on that partition.

/var/log/dist-upgrade/main.log contains:
(...)
2007-03-24 10:17:56,578 DEBUG Free space on /: 1232293888
2007-03-24 10:17:56,579 DEBUG Dir /usr mounted on /
2007-03-24 10:17:56,580 DEBUG Dir /var mounted on /
2007-03-24 10:17:56,581 DEBUG Dir /boot mounted on /
2007-03-24 10:17:56,582 DEBUG Dir /var/cache/apt/archives/ mounted on /
2007-03-24 10:17:56,583 DEBUG Free space on /home: 1611534336
2007-03-24 10:17:56,584 DEBUG fs_free contains: '{'/var': <DistUpgradeControler.FreeSpace object at 0x9b6a9c4c>, '/home': <DistUpgradeControler.FreeSpace object at 0x9b6a9b6c>, '/boot': <DistUpgradeControler.FreeSpace object at 0x9b6a9c4c>, '/usr': <DistUpgradeControler.FreeSpace object at 0x9b6a9c4c>, '/': <DistUpgradeControler.FreeSpace object at 0x9b6a9c4c>, '/var/cache/apt/archives/': <DistUpgradeControler.FreeSpace object at 0x9b6a9c4c>}'
2007-03-24 10:17:59,311 DEBUG dir '/var/cache/apt/archives/' needs '1281071154.0' of '<DistUpgradeControler.FreeSpace object at 0x9b6a9c4c>' (1232293888.000000)
2007-03-24 10:17:59,312 ERROR not enough free space on /var/cache/apt/archives/ (missing 48.8M)

the line
dir '/var/cache/apt/archives/' needs '1281071154.0'
makes me think the 44.4M displayed in the dialog is wrong and should be ~1280M ?